直ちょく和わ

noun

direct sum

Mathematical term used in linear algebra and abstract algebra. Refers to a construction that combines modules, vector spaces, or groups. The cross-reference to 和 (sense 1) indicates a relationship to the general concept of 'sum'.

See also: 和

• ベクトル空くう間かんの直ちょく和わを考かんがえる。

  Consider the direct sum of vector spaces.

• この定てい理りは直ちょく和わ分ぶん解かいに関かんするものだ。

  This theorem is about direct sum decomposition.